<p>请参阅此Python函数,它最多可以处理6个重写。</p>
<pre><code># Fill SessionOptions
sessionOptions = blpapi.SessionOptions()
sessionOptions.setServerHost('localhost')
sessionOptions.setServerPort(8194)
# Create a Session
session = blpapi.Session(sessionOptions)
# Start a Session
if not session.start():
print("Failed to start session.")
return
try:
# Open service to get Bloomberg data from
if not session.openService("//blp/refdata"):
print("Failed to open //blp/refdata")
return
# Obtain previously opened service
refDataService = session.getService("//blp/refdata")
request = refDataService.createRequest("ReferenceDataRequest")
request.getElement("securities").appendValue(securities)
request.getElement("fields").appendValue(requestField)
overrides1 = request.getElement("overrides").appendElement()
overrides1.setElement("fieldId", overrideID1)
overrides1.setElement("value", overrideValue1)
if (overrideID2 is not None and overrideValue2 is not None):
overrides2 = request.getElement("overrides").appendElement()
overrides2.setElement("fieldId", overrideID2)
overrides2.setElement("value", overrideValue2)
if (overrideID3 is not None and overrideValue3 is not None):
overrides3 = request.getElement("overrides").appendElement()
overrides3.setElement("fieldId", overrideID3)
overrides3.setElement("value", overrideValue3)
if (overrideID4 is not None and overrideValue4 is not None):
overrides4 = request.getElement("overrides").appendElement()
overrides4.setElement("fieldId", overrideID4)
overrides4.setElement("value", overrideValue4)
if (overrideID5 is not None and overrideValue5 is not None):
overrides5 = request.getElement("overrides").appendElement()
overrides5.setElement("fieldId", overrideID5)
overrides5.setElement("value", overrideValue5)
if (overrideID6 is not None and overrideValue6 is not None):
overrides6 = request.getElement("overrides").appendElement()
overrides6.setElement("fieldId", overrideID6)
overrides6.setElement("value", overrideValue6)
# Send the request
session.sendRequest(request)
# Process received events
while(True):
# We provide timeout to give the chance for Ctrl+C handling:
ev = session.nextEvent(500)
for msg in ev:
if msg.messageType() == "ReferenceDataResponse":
return msg.getElement("securityData").getValueAsElement(0).getElement("fieldData").getElementAsString(requestField)
if ev.eventType() == blpapi.Event.RESPONSE:
# Response completely received, so we could exit
break
finally:
# Stop the session
session.stop()
</code></pre>